Pipe-coupling.



UNITED STATES PATENT OFFICE.

JACOB s. LAITINEN, OF COLUMBUS, OHIO.

PIPE-COUPLING.

Specification of Letters Patent.

Patented Aug. 1, 1905.

Application filed y 16, 1905- Serial No. 260,619.

To 66 whom it may concern.-

, an improved pipe-coupling that is of simple and economical construction and which can be quickly manipulated to effect the coupling.

The invention consists in the construction hereinafter described and claimed, the invention not being limited to precisely the forms of the parts shown.

In the accompanying drawings, Figure 1' illustrates the members of the coupling coupled, a portion being broken out to illustrate a detail of construction. Fig. 2 shows said members uncoupled, with a portion broken out to illustrate a detail of construction. Fig. 3 is a view looking at the lefthand end of Fig. 1. Fig. 4: is a cross-section on the line as as, Fig. 1. Fig. 5 is a longitudinal sectional view showing the right-hand member in Figs. 1 and 2 modified to constitute a cap or closure.

The left-hand member 1 is shown to have one end doubly beveled or inclined, asseen at 1 and 1", with shoulders 1 between them and shoulders 1 and 1 at the outer terminals of the inclined edges. The edges of this member are provided with a groove I in which is fitted a suitable packing, as of rubber, leather, or some composition adapted to insure proper tightness when the members are coupled.

Formed on or attached to the sides of the member 1 are arms 2, between the upper ends of which is pivoted a cam-clamping device 2.

The right-hand member of the coupling, which is designated 3, is doubly beveled or inclined, as indicated at 3 and 3 and provided with intermediate shoulders 3 and ter minal shoulders 3 and 3 to match the corresponding inclined edges and shoulders on the member 1. The edges of the member 3 are provided with a circumambient tongue 3 to fit into the groove 1 against the packing therein.

In practice the terminal shoulders 1 and 1 and 3 and 3 may serve as stops to limit the movement of the moving member when thrust toward the other in effecting the coupling, and the intermediate shoulders l and 3 will limit the movement of the beveled edges toward each other when the clamping device is turned down, as seen in Fig. 1, or prevent the longitudinal separation of the members after they are coupled.

In Fig. 5, which shows a closing-cap, the construction of the matching edge is the same as shown in the right-hand member in Figs. 1 and 2, but the right-handend is closed, as indicated at 1 Such a cap may be used to close, for example, the nipple of a water-plug, and in such case it can be chained to the plug to prevent loss.

To prevent accidental uncoupling where the coupling is dragged about, as might be the case where the coupling is employed to couple a hose-nozzle to a hose, the extremity of the lever of the clamping device can be depressed into a socket in one of the members, as indicated by broken lines, Fig. 1.

What I claim, and desire to secure by Letters Patent, is-

1. In a pipe-coupling, two members to be coupled having tongued-and-grooved matching edges that lie in an inclined plane with respect to the axis of the members, combined with means to clamp said edges together.

2. In a pipe-coupling, two members to be coupled having matching edges that lie in an inclined plane with respect to the axis of the members and with reversely-inclined shoulders to prevent longitudinal separation of the members after they are placed together, combined with means adapted to press said inclined edges toward each other and lock them together. I

3. In a pipe-coupling, two members to be coupled having matching edges that lie in an inclined plane with respect to the axis of the members and with shoulders inclined in a direction opposing the direction of inclination of the aforesaid matching edges to prevent longitudinal separation of the members after they are placed together, said edges and said shoulders being tongued and grooved, combined with means to lock said members together.

4:. In a pipe-coupling, two members to be coupled having matching edges that lie in an inclined plane with respect to the axis of the members, shoulders to limit the thrust of one member toward the other and shoulders in- In testimony whereof I afiix my signature in presence of two witnesses.

JACOB S. LAITINEN.

Witnesses:

U. R. PE'rnRs, BENJ. FINOKEL. 

